Extension Wall

I've seen this in a few other schools but want to set it up in my own.

I'm looking at an 'extension wall'. As part of a target I was set to challenge high ability students and I don't want to just set them 'more of the same work'.

I was thinking about having a wall that's full of the latest things going on (hopefully not having to update it too much)

For example:
How 3D printing works
Robotics in the engineering world
Design like a pro
Materials theory
Etc

Anyone have any ideas about any of this? Or sources that could help me? Is this a good idea in our subject? I basically want to challenge the students while promoting an interest and love for the subject.